Per Dorman's Adventurers of Purse and Person, Mary Bolling and John Fleming were the parents of Thomas (d. 30 Jan 1777), John (d. 21 April 1767), William (6-July 1736-15 Feb 1824), Charles (d.abt 1794), Mary (married in 1749), Caroline (married 1762 and 1764), Richard (died unmarried c. 1763), and an unnamed son who died young.
No Margaret, Jane, or Alexander.